KI-AGENT: Datenbank-URL im Selfhost-Setup absichern

docker-compose.selfhost.yml

@@ -99,7 +99,7 @@ services:
       COOKIE_SECRET: ${COOKIE_SECRET}
       JWT_SECRET: ${JWT_SECRET}
       ENCRYPTION_KEY: ${ENCRYPTION_KEY}
-      DATABASE_URL: ${DATABASE_URL}
+      DATABASE_URL: ${DATABASE_URL:-postgres://${DB_USER}:${DB_PASSWORD}@db:5432/${DB_NAME}}
       MAILER_SMTP_HOST: ${MAILER_SMTP_HOST}
       MAILER_SMTP_PORT: ${MAILER_SMTP_PORT}
       MAILER_SMTP_SSL: ${MAILER_SMTP_SSL}